A broadband box with no wire — and no tolerance for a dropped link.
Fixed wireless access has to feel like a wired line while running over a radio link that never sits still. The customer-premises device must find and hold the best beam, sustain throughput as interference and weather shift, and do it in a sealed box that has to manage its own heat.
DomainWireless, fixed access
PlatformsFaststream Radio
ScopeRF front end to sustained throughput
Binding constraintWired-grade broadband over a moving radio channel
DisclosureRepresentative programme; customer not named
CONTEXT
Where this started.
Fixed wireless access replaces a broadband wire with a 5G link. The user expects a wired experience: high, steady throughput that just works. The radio does not cooperate — the channel to the base station changes with weather, foliage and interference, and the best beam today is not the best beam tomorrow.
So the device has to actively find and hold the best link: antenna and beam selection, tracking the channel as it drifts, and sustaining throughput rather than peaking in a demo and sagging in service. And because it is a sealed, always-on box pushing a fast modem, it has to manage its own thermals without throttling the very throughput it promises.
The engineering is sustained, real-world performance: RF front end and antenna, beam management that tracks a moving channel, and a thermal design that lets the modem run flat out continuously.
CHALLENGES
4 problems, named.
Stated before any of them had an answer.
01
Wired expectations, wireless channel
The user expects broadband that just works; the radio channel drifts with weather and interference, so steadiness has to be engineered, not assumed.
02
The best beam moves
Antenna and beam selection is not one-time; the link that is best now degrades, and the device has to track and re-select continuously.
03
Throughput must be sustained
Peaking in a demo is easy; holding high throughput in service as conditions change is the real requirement.
04
Heat throttles performance
A sealed always-on box running a fast modem generates heat that will throttle throughput unless the thermal design prevents it.
ARCHITECTURE
How it was built.
A speed-test peak is the easy number. The product is steady, wired-grade throughput held over a radio channel that moves — in a box that must not cook itself.
CONTRIBUTION
What Faststream did.
The scope of the work, rather than a capability list.
RF front end — a sensitive, linear receive and transmit path that maximises the usable link.
Antenna and beam selection — finding the best beam to the base station rather than accepting the first.
Beam tracking — re-selecting continuously as the channel drifts with weather and foliage.
Throughput management — sustaining high throughput in service rather than peaking in a demo.
Thermal design — letting the modem run at full rate continuously without throttling.
Remote management — a device an operator can configure, monitor and update in the field.
WHAT WAS HARD
The parts that consumed the schedule.
Rarely the subsystem that sounds difficult.
01
Steadiness over a moving channel
Delivering a wired-grade experience over a radio link that constantly changes is the core difficulty; the user notices every sag.
02
Tracking the best beam
Beam management that keeps re-selecting the best link as conditions drift, without disrupting the connection, is subtle.
03
Thermals versus throughput
The heat of a flat-out modem in a sealed box directly threatens the throughput it promises; the thermal design is a performance feature, not packaging.
04
Sustained, not peak
The honest metric is throughput held over days in real conditions, which is far harder than a headline speed-test figure.
OUTCOME
What resulted.
Wired-grade in feel
High, steady throughput that behaves like a wired line rather than a variable radio.
Best beam held
Continuous beam tracking that keeps the strongest link as the channel drifts.
Sustained throughput
Performance held in service, not just peaked in a demo.
Runs flat out, cool
A thermal design that lets the modem sustain full rate without throttling.
Confidentiality
Customer projects are presented at property, capability, outcome and integration level. Customer names, internal architecture, confidential deliverables and commercial terms are not disclosed. Where a detail would identify a customer it is omitted rather than approximated. More is available under a non-disclosure agreement, within the limits the customer has agreed.
It is broadband delivered over a cellular radio link instead of a wire. A customer-premises device — the box in the home or office — connects to a 5G base station and presents a normal broadband service to the user. The appeal is reaching places a wire does not, and the challenge is making a radio link feel like a wired one: high, steady throughput that the user does not have to think about.
02
Why is beam management ongoing rather than one-time?
Because the radio channel to the base station changes. Weather, foliage growth, moving obstacles and interference all alter which antenna beam gives the best link, and the beam that is optimal now can degrade later. The device therefore has to keep estimating the channel and re-selecting the best beam continuously, holding the strongest link as conditions drift, rather than choosing once at install and assuming it stays best.
03
Why does thermal design affect throughput?
Because a fast modem running continuously in a sealed, always-on box generates significant heat, and if that heat is not managed the device throttles — deliberately reducing performance to protect itself. That throttling directly undermines the sustained throughput the product promises. So the thermal design is a performance feature: getting the heat out is what lets the modem run at full rate around the clock rather than only in short bursts.